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Keywords:

  • block copolymers;
  • nanocomposites;
  • nanoparticles;
  • reversible addition–fragmentation chain transfer;
  • self-assembly;
  • stimuli-sensitive polymers

Abstract

Smart organic–inorganic hybrids are prepared using non-covalent interactions between water-soluble silsesquioxane nanoparticles and two amino acid-based block copolymers prepared by reversible addition–fragmentation chain transfer (RAFT) polymerization. A block copolymer displaying lower critical solution temperature (LCST) and upper critical solution temperature (UCST) is employed, in which only poly(N-acryloyl-4-trans-hydroxy-L-proline) segment could interact with the nanoparticles, whereas another poly(N-acryloyl-L-proline methyl ester) segment shows a thermoresponsive property without any interaction. The complexation of another type of dual thermosensitive block copolymer with two different LCSTs and the silsesquioxane nanoparticles is also investigated.